#!/usr/bin/env node

class shell{
  constructor(id){
    this.#id=id
  }
  #id
  #timerId




  start(){
    thid.#timerId=setTimeout(()=>{
      console.log(`#${this.#id}`is BOOM)
    },3000)
  }
  clear(){
    clearTimeout(this.#timerId)
    console.log(`#${this.#id}is not BOOM`)
    
    
  }
}
let b1=new shell(1);
b1.strat()
let b2=new shell(2);
b2.strat()
setTimeout(b2.clear().bind(b2),1000)

